Valve for internal-combustion and other engines



FII; 2/

P. F. DANIEL.

I. COMBUSTION AND OTHER ENGINES.

APPLICATION FILED Nov. I8, 1919,

VALVE FOR INTERNA Patented May 2, 1922.

ATTy.

unimoV STATES vPari-:NT OFFICE.

VALVE FOR INTERNAIrCOMBUSTION AND OTHER ENGINES.

Specification of Letters Patent.

Patented May 2, 1922.

Application tiled November 18, 1919. Serial No. 338,787.

To all whom it may concern.'

Be it known that I, PETER FRANCIS DAN- IEL, a subject of the King of Great Britain, residing at Royal Exchange Buildings, Cathedral Square, Christchurch, New Zealand, have invented new and useful Improvements in and Relating to Valves for Internal-Combustion and Other Engines, of which the following is a specification.

This invention rela-tes to valves for controlling the admission and exhaust in internal combustion and other enginesand refers to that type of valve comprising a revolving member or rotor in which are provided openings or ports adapted at the required stage in the cycle of the engine to register with stationary ports and so provide the necessary communication between the cylinderA and the induction or exhaust pipes.

In cases where a rotorof this nature has been employed to co-act with a plurality of ports, as for instance in the case of an engine having two or more cylinders, difiiculty has been experienced in providing and maintaining the degree of gas-tightness between the rotor and the several port-faces necessary to obtain a satisfactory compression of the gas within the cylinders.y

It is the object of the present invention therefore to overcome this difllculty by providing a construction whereby an individual adjustment of the rotor in relation to each of the port-faces may be effected, lwhile a further object of the present invention is to provide a construction of this nature in which a circulation of water may be maintained through the rotor for cooling purposes. l

In' carrying theseobjects into efl'ect the present invention consists essentially of constructing the rotor in the form of a series of sections disposed at the desired intervals apart and conjoined end-to-end by means of axially disposed flexible connections having hollow cores adapted to permit ofthe flow of a circulation of water therethrough and through hollow cores provided in said sections.

In order that the nature of the invention may be clearly understood, reference will now be made to the accompanying drawings in which Figure 1. shows three valves constructed in accordance with the present invention,

Figure 2. is a sectional elevation showing.

'two cylinders of an engine fitted with valves 1n accordance with the present invention,

F1gure 3. 1s a cross-section along the line A- B Figure 2, and,

Figure 4. is a plan View showing the inlet and exhaust valves of two cylinders illustratmg by way of example, an alternative method of driving for that employed in the preceding figures. i

As here shown the valves are arranged in the overhead position in relation to the cylinders and such valves consist of twin rotors one to control the inlet and the other .to control the exhaust.

It will be understood, however, that the valves may, if preferred, be arranged upon the side or any other suitable posit1on upon the cylinders and similarly such valves may, if desired, be included in the form of a single rotor.

.According to the present invention the rotor takes the form of a series of sections l disposed at the desired intervals apart and conjoined end-to-end by means of axially disposed flexible connections 2 havin hollow cores 3 adapted to permit of the ow of a circulation of water therethrough and through hollow cores 4 formed in the said sections 1.

These flexible connections 2 consist preferably of lengths of spirally constructed flexible metallic tubing which are suitably:

attached as by clamping, brazing, or other means, to the said sections.

In lieu of this construction however, the flexible connections may consist of ball and socket joints or any other suitable or appropriate flexible means of communication between such sections and adapted to provide the necessary passage for water to circulate through the said hollow cores 4.

The said flexible connections whether of the spiral tubular form or otherwise, are preferably so constructed as to withstand the necessary torsional strain involved in turning the rotors and transmitting the drive from one section to the other.

If necessary however, additional mechanical means may be provided to relieve the flexible connections of this torsional strain but without`impairing the necessary flexibility between such sections.

As here shown, in Figures ll and 2, this purpose is effected by the employment of couplings 5 attached to the ends of the sections flexible connections 2 may be received within tainin close-fitting sockets 8 provided in spigots or bosses 9 and the necessary Water-tight joints between the connections and the sections 1 may be provided by inserting suitable pac-king 10 between the vends of the spigots 9 and the corresponding portions' of the couplings, as here shown in Figure 2.

In lieu ofV the couplings however, the driving of the various sections, in the case of either a single or twin rotor construction, may be effected (as shown in Figure 4) by the employment of a shaft 11 disposed parallel with the rotor or rotors and upon which shaft are keyed, at the required ositions upon the length thereof, gear whee s or the equivalent 12 adapted to intermesh with gear wheels or the like 13 keyed upon or formed integral with the various sections 1.

It must be clearly understood however, that thev foregoing means for mechanically operating the sections are given merely by way of example and the invention must'not therefore be confined thereto or indeed to the use of mechanical means of any kind as such means are only necessary, as already pointed out, in cases Where the flexible connections are of such a nature as to be incapable of withstanding the torsional strain, and preserving correct relationship of the various sections l to each other.

The mounting of the valve consists of va series of suitably formed and fixed seats or port-faces 14 containing the usual ports 15 communicating with the cylinders 16, and a corresponding Vseries of port-faces 17 conports 18 communicating with the induct1on pipe 19 or exhaust pipe 20, as the case may be, such ports being placed in communication by the registering therewith ofy v the ports 21 of the rotor as customary.

lAccording to the present invention for the purpose of keeping the various sections of the rotor in close and gas-tight contact with the seats or port-faces 14, the portfaces 17 are made adjustable.

As here shown (Figures 2 and 3) this purpose-is effected by mounting such portfaces 17 slidably in caps 22 which latter are secured to the portion of the engine containing the port-faces 14 by means of studs, bolts or other suitable means 23.

Mounted upon the upper or outer extremities of the caps 22 are the induction and exhaust manifold pipes 19 and 20 which areA4 clamped in place by studs 24 or other suitable means.

For the purpose of causing the adjustable port-faces 17 to exert the desired degree'of.

pipes, as clearly shown in Figures 2 and 3. f

This construction is however, show'n merely by way of example and this feature of the invention must not therefore, be confined theretobut includes within its scope the employment of any .suitable port-faces adapted to be adjusted by means of springs, setscrews or other means so as to cause their corresponding rotor-sections tobear with the desired degree of pressure upon their seats or fixed port-faces as already mentioned.

For the purpose of lubricating the rotorsections in order to obviate the danger of seizing and to reduce friction, a layer of` felt or other absorbentfmaterial 27 is ar' ranged in a suitable recess in the central por-k tion of each ofthe caps 22 in such a manner that the ends of suchfelt will be in wiping contact with the peripheries of the rotorsections land a sultable pipe or duct 28 is e provided to supply oil-to the felt 27.

It will be un erstood that, in consequence ofthe flexibility provided in the joints between the rotor-sections, it will by this construction` be possible to'make an individual adjustment in each case so as to cause each section to bear with the desired degree of pressure against its respective fixed portfaces upo-n the cylinder.

The said/sections may be so arranged that each will contain one of the said port open! ings adapted to come into and out of register with the stationary ports or if so desired each of such lsections may be arranged' to contain two or more of such port openings.

I claim.

In a rotary valve the combination of a series of port-faces, a ported rotor adapted to co-act therewith and consisting of aseries of sections' conjoined end-to-end by flexible connections adapted to permit the flow of a circulation of water therethrough and through hollow cores in said rotor sections, and means for transmitting the necessary drives to said sections and for relieving said flexible connectionsof torsional strain.

In testimony whereof I have signed my name to this specification.

PETER FRANCIS DANIEL.

Witnesses:

CYRIrJ CARLYN CoA'rEs, SIDNEY J AMES TRELEAVEN. 

